“Mini-Earth” is discovered close to the Solar System

A quartet of small, rocky exoplanets orbit Barnard's Star, located about 6 billion light-years from Earth, making them potential targets for future human missions. Researchers have discovered four small exoplanets orbiting Barnard's Star. This illustration shows what a planetary system around one of the rocky worlds might look like. The quartet of Earth-like planets... The post Four Small Earth-like Planets Found Orbiting One of the Closest Star…

Classified as a “mini-Earth”, Barnard b is one of the few alien worlds identified with a mass smaller than that of our planet